Service Employees International Union-United Healthcare Workers West (SEIU) claims hospital housekeepers and janitors are understaffed and not permitted enough time to properly sanitize a room in between patients.

Ann Weinacker, MD, associate CMO of patient care services at Stanford said the data featured in the union's report is outdated and disputed the union's claims that housekeepers are understaffed.

Stanford said the union's report as a bargaining tactic to acquire a new contract for its membership.